Source code

Revision control

Copy as Markdown

Other Tools

<!DOCTYPE html>
const barProps = ["locationbar", "menubar", "personalbar", "scrollbars", "statusbar", "toolbar"];
const barPropsObj = {};
const channelName =;
const channel = new BroadcastChannel(channelName);
for (const prop of barProps) {
barPropsObj[prop] = window[prop].visible;
// Because messages are not delivered synchronously and because closing a
// browsing context prompts the eventual clearing of all task sources, this
// document should not be closed until the opener document has confirmed
// receipt.
channel.onmessage = () => { window.close() };